TY - JOUR
T1 - Studying the abrasion damage of concrete for hydraulic structures under various flow conditions
AU - Liu, Qiong
AU - Li, Liang
AU - Andersen, Lars Vabbersgaard
AU - Wu, Min
N1 - Publisher Copyright:
© 2022 The Authors
PY - 2023/1
Y1 - 2023/1
N2 - Concrete abrasion is a durability problem especially for hydraulic structures, which is caused by physical damage mainly due to hard abrasive particles and water impacting against the concrete surface. In this study, a home-made test setup was adopted to investigate the abrasion damage under various similar-to-the-field flow conditions. A new abrasion measurement and analysis method was introduced where a three-dimensional (3D) scanner was used to re-construct the abraded surface profile digitally, which enabled detailed evaluation on not only the maximum abrasion depth but also the distribution of the depths and the corresponding abraded areas. The abrasion resistance of four concrete mixtures was studied, together with the effects of changing abrasive particles in testing, sediment contents, flow velocity, and impact angle of the flow on concrete surface. Based on the obtained experimental results, in-depth discussions were presented. In addition, a modified mathematical model was proposed to predict concrete material loss due to abrasion with demonstrated reliability and applicability.
AB - Concrete abrasion is a durability problem especially for hydraulic structures, which is caused by physical damage mainly due to hard abrasive particles and water impacting against the concrete surface. In this study, a home-made test setup was adopted to investigate the abrasion damage under various similar-to-the-field flow conditions. A new abrasion measurement and analysis method was introduced where a three-dimensional (3D) scanner was used to re-construct the abraded surface profile digitally, which enabled detailed evaluation on not only the maximum abrasion depth but also the distribution of the depths and the corresponding abraded areas. The abrasion resistance of four concrete mixtures was studied, together with the effects of changing abrasive particles in testing, sediment contents, flow velocity, and impact angle of the flow on concrete surface. Based on the obtained experimental results, in-depth discussions were presented. In addition, a modified mathematical model was proposed to predict concrete material loss due to abrasion with demonstrated reliability and applicability.
KW - Abrasion depth
KW - Concrete abrasion
KW - Concrete durability
KW - Hydraulic structures
KW - Prediction model
KW - Three-dimensional scanning
UR - http://www.scopus.com/inward/record.url?scp=85142189931&partnerID=8YFLogxK
U2 - 10.1016/j.cemconcomp.2022.104849
DO - 10.1016/j.cemconcomp.2022.104849
M3 - Journal article
AN - SCOPUS:85142189931
SN - 0958-9465
VL - 135
JO - Cement and Concrete Composites
JF - Cement and Concrete Composites
M1 - 104849
ER -